WarGames "ASCII" Drawing

The movie WarGames does
quite a good job of portraying early microcomputer use. When the main
character, David, gets access to the WOPR mainframe he plays the "Global
Thermonuclear War" game. The game starts with a pretty decent piece of
ASCII art. Take a
look:

I tried to re-create that and got a decent approximation yet it didn't
look nearly as good:

Watching the video more closely it became clear that many non-ASCII characters
were being used. And, incidentally, the spaces between characters were being
printed instantaneously. An understandable and minor oversight in their
simulation of data coming over a modem.

Offhand I thought they may have been using special graphics characters on
the IMSAI. It appears the IMSAI had many third party video board options
available. The one you could buy from them doesn't come with any graphics
characters that match what we see in the movie but you can program your own.
It still doesn't match up, the documentation (PDF)
says it works with a 7 x 10 character matrix while the display shown is
clearly 8 x 10 (look closely at the "Y" and "W" characters). Additionally,
the "L", "Y", "t" and "g" characters are clearly shaped differently.

There are enough details that I'm sure an IMSAI expert could figure out what
video board was used. Assuming the the video output came from an IMSAI.
There is some suggestion this is the case, but if not I expect it was some
kind of contemporary CP/M machine.

Instead, I decided to try and recreate it. After many viewings of the
scene in slow motion I figured that these set of graphics characters
reasonably matched those on screen:

Using them we can create a reasonable facsimile:

Some tweaking of the characters might improve things -- it looks
pretty rough along the south-west part of the United States where
the characters aren't joining up properly. Maybe those require
other characters defined.

The extra dots on the right side of characters is an oddity. My theory
is that there were a bug in the character generator software used and
were left in because it gives the display a little pizazz and makes it
looks a little more like true ASCII, somehow. Such are the ways of
movie magic.